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Finding the Fourth Proportional to 39,782.34, 59,673.69 and 12,080.34

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Solution

The fourth proportional to 39,782.34, 59,673.69 and 12,080.34 is: 18,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.34 : 59,673.69 = 12,080.34 : x
  2. Step 2: Convert to fraction form
    39,782.34/59,673.69 = 12,080.34/x
  3. Step 3: Cross multiply
    39,782.34x = 59,673.69 × 12,080.34
  4. Step 4: Simplify right side
    39,782.34x = 720,878,464.25
  5. Step 5: Solve for x
    x = 720,878,464.25/39,782.34
  6. Step 6: Final answer
    x = 18,120.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.